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added more rationale to the operator-> issue

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[SVN r21739]
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Jeremy Siek
2004-01-14 20:29:51 +00:00
parent 2854c5c761
commit 42147b9e86
1 changed files with 11 additions and 2 deletions
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doc/iter-issue-list.rst
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@ -952,8 +952,17 @@ instead of ``(*a).m`` ?
:Proposed resolution: NAD.
:Rationale: We think you're misreading "pre:".
Also requiring proxy iterators to support ``->`` would make old
iterators not conform to new iterator requirements.
If ``(*a).m`` is not well defined, then the iterator is not
required to provide ``a->m``. So a proxy iterator is not
required to provide ``a->m``.
As an aside, it is possible for proxy iterators to
support ``->``, so changing the requirements to
read ``static_cast<T>(*a).m`` is interesting.
However, such a change to Readable Iterator would
mean that it no longer corresponds to the
input iterator requirements. So old iterators would not necessarily
conform to new iterator requirements.
counting_iterator Traversal argument unspecified